Yes, actually after reviewing the various versions of Python on Windows, we found out that on 2.5.2 the call to the oft-used datetime.datetime.now() triggers an "import time" from the native C code. This is a peculiar behavior of this version+platform combination, but the same can be reproduced more easily on linux or other versions with datetime.datetime.strftime():
Python 2.6.6 (r266:84292, Sep 15 2010, 16:22:56) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> _org_import = __builtins__.__import__ >>> def _import(name, *args): ... print "importing", name ... return _org_import(name, *args) ... >>> __builtins__.__import__ = _import >>> import datetime importing datetime >>> now = datetime.datetime.now() # ok on linux+2.6, no hidden import >>> datetime.datetime.strftime(now,"%H:%M:%S") # will trigger 'import time' importing time '17:51:33' >>> There is apparently no way to prevent this, these datetime functions are frequently needed, so the only possible solution is to allow "import time" within safe_eval, even when the time module is already provided in the context. The time module is considered safe, so there is not security risk in allowing this. Should we find other similar cases where safe_eval() blocks an indirect call to "import" that we would like to allow, we'll have to evaluate the risks involved in allowing that module as well in ALLOWED_MODULES. Hope this clears up the situation a bit. For those interested by the technical details, you can dig in the source code of Python's datetime module to discover that datetime_now() in turn calls datetime_best_possible() which contains 2 different implementations, depending on the platform's support for gettimeofday() [1]. As there is no gettimeofday() on windows, the alternative implementation is to construct a datetime based on a timestamp provided by the time module, hence the import via time_time() [2],[3]. [1] http://svn.python.org/view/python/tags/r252/Modules/datetimemodule.c?view=markup#l3719 [2] http://svn.python.org/view/python/tags/r252/Modules/datetimemodule.c?view=markup#l3743 [3] http://svn.python.org/view/python/tags/r252/Modules/datetimemodule.c?view=markup#l1363 -- You received this bug notification because you are a member of C2C OERPScenario, which is subscribed to the OpenERP Project Group. https://bugs.launchpad.net/bugs/703841 Title: v6 ImportError: time Status in OpenERP Server: Fix Released Bug description: Hi, windows vista addons rev 4248 when I install modules with configurator, the configurator don't finish all options (without error popup), I have this error in the server log : [2011-01-17 09:28:40,229][aaaa] INFO:init:module hr_timesheet_sheet: loading test/test_hr_timesheet_sheet.yml [2011-01-17 09:28:40,864][aaaa] ERROR:tests.hr_timesheet_sheet:time Traceback (most recent call last): File "tools\yaml_import.pyo", line 729, in process File "tools\yaml_import.pyo", line 742, in _process_node File "tools\yaml_import.pyo", line 317, in process_record File "tools\yaml_import.pyo", line 330, in _create_record File "tools\yaml_import.pyo", line 391, in _eval_field File "tools\yaml_import.pyo", line 357, in process_eval File "tools\safe_eval.pyo", line 281, in safe_eval File "", line 1, in <module> File "tools\safe_eval.pyo", line 215, in _import ImportError: time [2011-01-17 09:28:40,864][aaaa] ERROR:test:Tests failed to execute in module hr_timesheet_sheet Traceback (most recent call last): File "addons\__init__.pyo", line 670, in load_test File "addons\__init__.pyo", line 693, in _load_data File "tools\yaml_import.pyo", line 794, in yaml_import File "tools\yaml_import.pyo", line 729, in process File "tools\yaml_import.pyo", line 742, in _process_node File "tools\yaml_import.pyo", line 317, in process_record File "tools\yaml_import.pyo", line 330, in _create_record File "tools\yaml_import.pyo", line 391, in _eval_field File "tools\yaml_import.pyo", line 357, in process_eval File "tools\safe_eval.pyo", line 281, in safe_eval File "", line 1, in <module> File "tools\safe_eval.pyo", line 215, in _import ImportError: time bye _______________________________________________ Mailing list: https://launchpad.net/~c2c-oerpscenario Post to : [email protected] Unsubscribe : https://launchpad.net/~c2c-oerpscenario More help : https://help.launchpad.net/ListHelp
